Attachment for use with incandescent gas-lamps.



T. S. BROWNE. ATTACHMENT FOR USE WITH INOANDESGENT GAS LAMPS.

' APPLICATION nun JAILB, 1912.

1,105,246; Patented July 28,1914.

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m k i 7 J (I /5 A; /2 A? 914x /9 l fiwwi ur'x weskesx q v J York, and State of New York, have invented certain new and wvhereby the device may whereby the light rays may be "UNITED STATES PATENT OFFICE.

ATTACHMENT FOR USE WITH INCANDESCENT GAS-LAMPS.

1,105,246. sp i Letters Patent. Patented July 28, 1914.

Application filed January 6, 1912. Serial No. 669,851. I To all whom it may concern: being provided a regulating device 9 for Be it known that I, TRAVERS S. BRoWNE, a subject of the King of Great Britain, now residing at New York city, county of ew regulating the amount of gas passing therethrough.

In constructions embodying the invention there will be-provided what may be termed a light-diffusing member so positioned with respect to the light as to surround the same. This member acts to catch the light rays and to direct them upwardly against the white or light colored ceiling and upper side walls which are usual in building construction. The rays are reflected back from the ceiling or walls and spread or distributed so that the glare is eliminated, shadows avoided, and at the same time substantially the full lighting power is utilized, in that loss of light by its being directly directed against dark wall paper, etc., where it would be absorbed, is avoided. The particular configuration of this diflusing member may be somewhat varied, but preferably and as illustrated it is in the form of an inverted cone 10 the sides of which are substantially straightand of dimensions suflicient to surround the light useful Improvements in Attachments for Use with Incandescent Gas-Lamps, fully described and represented in the following specification andthe accompanying drawings, forming a part of the same.

This invention relates to certain improvements in attachments for use with lights, especially with gas lights of the incandescent type.

It is an especial object of the invention to provide an improved structure of simple form by which the effect of indirect lighting may be obtained, the light rays being diffused and the glare therefrom eliminated, and at the same time substantially the full illuminating power of the light being obtained.

It is a further object of the invention to produce a device of this character which may be readily attached to gas light fixtures, and which is provided with means have its position relatively to the light somewhat varied,

properly focused as required by varying conditions, as the location of the fixtures and the dimensions of the apartment to be lighted.

It is a further object of the invention to provide a structure which, when used with lights of the incandescent gas type, will'permit of easy access to the usual gas adjusting member of such lights, without necessitating the removal of the attachment or any part thereof.

One suitable structure for effecting the enumerated and other objects is illustrated in the accompanying drawing, in which the figure is provide a suflicient surface for properly d1- recting the rays. The employment of a sub stantially straight-sided cone amplifies or directs the rays to the part of ceiling and side walls from which they will be redirected to the best advantage.

In accordance with the invention the walls of the member 10 are substantially opaque, and for convenience and cheapness in manufacture the member is formed of opaque material, as thin brass. To obtain the best results the inner surface 3 of the member 10 will be a reflecting surface, such as polished nickel, silver, etc. This diffusing member 10 is apertured centrally to permit of the reception of the hollow standard 6 on which the light is carried. Themember 10 in the best constructions, furthermore, is supported so that its position relatively to the light may be somewhat varied in order that the light rays may be properly directed or focused as conditions may require. While this may be accomplished in various ways, a convenient structure for this purpose is that illustrated. In this construction the member 10 is provided with a threaded central flange 12 threaded on flange 13 on a support 14, member 10 thus having a certain vertical adjustment on the support. The construction of the support 14 may be somewhat varied. As illustrated, it is cone-shaped and a sectional elevation of a preferred form of the attachment in position with a fixture. the light, shown being an incandescent gas lamp of the VVelsbach type and the usual globe and globe supporting bracket.

Referring now to this drawing, the attachment is shown as used with a Welsbach light of the usual construction comprising a I mantle l surrounded by an inclosing casing of mica 2 and having the usual top and base 4:, 5. This light is supported on a hollow standard 6, as usual, and gas is supplied thereto through pipe 7 and nipple 8, there with which it is intended to be used and to provided with a central opening 15 coinciding with the opening in the member 10 before referred to, through which the hollow standard 6 of the light may pass. The open 5 cnd of the support14 furthermore permits threaded flange, and a coneshaped support having a central threaded flange on which the light-diflusing member is movably mounted so that its position relatively to the gas light may be varied. 7

n a device of the character described, the combination with an incandescent gas light, of a globe, a globe-supporting bracket, a cone-shaped support mounted on the bracket having a central threaded flange, 75 an inverted cone-shaped light-difl'using member arranged to set within the globe having walls opaque to light and provided with a central threaded flange adapted to thread in the flange of the support, the 30 light-diffusing member being positioned so as to surround the gas light and acting to direct lts rays upwardly against the wall or ceiling.

4. In a device of the character described,

to the base 14 than the type shown. The walls of the support 14 are preferably, for 10 cheapness and convenience in manufacture, made of thin sheet metal, brass for instance. This support 14 may, if desired, be mounted on and carried by the globe-bracket 16,which 15 provided with a narrow flange 18 resting on edges of the globe 17, which in turn is held in the bracket by screws 19.

While the adjustment of the diffusing 20 member 10 shown and described is an advantageous one for use wlth fixtures alread in place, it will be understood that this adjustment may be obtained with other fixtures constructed to permit the entire device and globe to be moved relatively to the light. The attachment as illustrated furthermore forms in eflect a Venturi tube, the flanges 12, 13 forming a short cylinder interposed between the two cone-shaped members 10, 14. This construction produces an supporthaving downwardly flaring walls mounted on the globe fixture, a flange on 90 the support, a cone-shaped light-diflusing support. 95 -5. In a device of the character described,

the combination with an incandescent gas light, of an inverted cone-shaped light-difing the highly polished surface of cone 10 when the cone is so used.

While the attachment has been shown and described as used with an incandescent gas lamp of the Welsbach type, it will be understood that its use 1 s not limited to such type In a device of the character described, 105

the combination with a globe and an incandescent gas lamp positioned therein, of alight diffusing reflector fitting 1n the globe one for effecting the results deslred, and 1s the preferred form, but it will be understood that other forms may be used without departing from the spirit of the invention.

at is claimed is In a device of the character described,

the combination with a globe and globe fixture and an incandescent gas lamp positioned within the globe, of a light diffusing reflector fitting within the globe so as to be substantially concealed in the same, a support mounted on the fixture, and tubular same. a support in which the reflector is 110 the reflector and the support whereby the reflector may be adjusted on the support to vary its position relatively to the light.

An attachment of the character de- 11 scribed comprising a cone-shaped member having substantially straight walls and a central flange 12, and cone-shaped member 14 having central flange 13 to which flange 12 of member 10 is threaded, the 12 flanges 12, 13 forming a passage of less diameter than the diameters of the member 10 or support 14.

n attachment of the character described comprising a cone-shaped member 1 having a central depending tubular flange and a supporting member having an up- 2. In a device of the character described,

the combination with an incandescent gas light, of an inverted cone-shaped light-diffusing member having walls opaque to light positioned to surround the gas light and direct its rays upwardly against the wall or ceiling, said member having a central forming a tubular passage. 4 1

a cone-shaped support, and connections be- 9. In a device of the character described, the combination with an artificial light, of an inverted cone-shaped light diffusing member having walls opaque to light positioned so as to surround the light and direct its rays upwardly against the ceiling or wall, said member having a central depending flange, and a cone-shaped support having a central upwardly extending flange, said 10 flanges being arranged to inter-engage and have a relative movement with respect to each other, whereby the light diffusing member is supported so that its position relatively to the light may be varied.

In testimony whereof, I have hereunto set 5 my hand, in the presence of two subscribing witnesses.

TRAVERS S. BROWNE.

Witnesses:

P. B. PHILIPP, T. F. KEHOE. 

